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Thank you for visiting our website.

Langwasser & Company, CPAs is a full-service accounting firm serving clients throughout the Upland area, dedicated to providing our clients with professional, personalized services and guidance in a wide range of financial and business needs.

On this website, you will find information about Langwasser & Company, CPAs, including our list of services. We have also provided you with online resources to assist in the tax process and financial decision-making. These tools include downloadable tax forms and publications, financial calculators, news and links to other useful sites. Whether you are an individual or business in or around Upland, Langwasser & Company, CPAs has years of valuable experience assisting professionals with their accounting needs.

We welcome any questions or comments you may have. Feel free to contact us at any time:


Langwasser & Company CPAs Names Two New Partners


Langwasser & Company CPAs, one of the Inland Empire’s leading full-service accounting firms serving clients throughout Southern California and across the United States, has doubled its partnership ranks with the naming of two new partners. 

Shawn Hull         Rosa Huerta

Shawn Hull of Chino Hills and Rosa Huerta of Upland have joined founding and lead partner Karin Langwasser and managing partner Cindy Agostini in leading the Upland, Calif., firm.

In addition, earlier this year, Langwasser & Company appointed two other team members to management positions. Sarah Scully was promoted to tax and accounting supervisor and Brandie Lubelski rejoined the company as controller.




  • Telephone...
  • (909) 931-9080
  • Fax...
  • (909) 981-1761
  • Langwasser & Company, CPAs
  • 99 C Street
  • Suite 100
  • Upland, CA 91786

You can also send us a message directly through the contact page of this website.